JP3979652B2 - Air cleaning apparatus and air cleaning method - Google Patents

Air cleaning apparatus and air cleaning method Download PDF

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Publication number
JP3979652B2
JP3979652B2 JP2003208146A JP2003208146A JP3979652B2 JP 3979652 B2 JP3979652 B2 JP 3979652B2 JP 2003208146 A JP2003208146 A JP 2003208146A JP 2003208146 A JP2003208146 A JP 2003208146A JP 3979652 B2 JP3979652 B2 JP 3979652B2
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Prior art keywords
ozone
concentration
negative ion
air
generating means
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JP2005065709A (en
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秀重 相羽
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株式会社相羽
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Priority to PCT/JP2004/012047 priority patent/WO2005018689A1/en
Priority to KR1020067003412A priority patent/KR101189527B1/en
Priority to CNB2004800275456A priority patent/CN100393362C/en
Priority to AU2004266523A priority patent/AU2004266523B2/en
Priority to AT04772008T priority patent/ATE530200T1/en
Priority to EP04772008A priority patent/EP1671657B1/en
Priority to US10/568,843 priority patent/US7540900B2/en
Publication of JP2005065709A publication Critical patent/JP2005065709A/en
Priority to HK07104155.6A priority patent/HK1097201A1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T23/00Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/015Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/16Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/22Ionisation

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Air Conditioning Control Device (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

In the present invention, an air clarifying apparatus (1), comprising a negative ion generating means (2) and an indoor air circulating means (4), further comprises an ozone generating means (3) having a capability of maintaining the average concentration value of ozone in an indoor atmosphere at 0.02 to 0.05 ppm, and the average concentration value of negative ions in the vicinity of the blowout port of the negative ion generating means (2) is maintained at 200,000 to 1,000,000 pieces/cc. With this configuration, a comfortable indoor environment can be created by fully utilizing a relaxation effect obtained by negative ions and by allowing the negative ions to coexist with ozone having a low concentration so that the sterilizing effect or the antibacterial effect of the apparatus is enhanced.

Description

【0001】
【発明の属する技術分野】
この発明は、マイナスイオンとオゾンとを低濃度で共存させるようにした空気清浄装置と空気清浄方法に関する。
【0002】
【従来の技術】
空気清浄装置は、室内の汚れた空気を濾過しながら送風ファンで循環させることにより良好な室内環境を維持するものであるが、近年、マイナスイオンの有する作用、すなわち人をさわやかな気分にすると共に、血液の浄化、精神安定、疲労回復等の作用(以下、これらを総称してリラクゼーション作用と記す)が注目されており、空気清浄装置にマイナスイオン発生機能を組み込んだものの利用が広まりつつある。一方、オゾンの持つ殺菌効果を利用した殺菌装置や除菌装置は周知である。しかしながら、この目的で使用される場合のオゾン濃度は例えば1%程度あるいはそれ以上に選定されるのが普通であり、この濃度では人体に有害である。このため、オゾンの殺菌効果を活用して室内空気を滅菌し、あるいは菌の増殖を抑える制菌を目的として、空気清浄装置においてオゾンを積極的に利用することはなされておらず、むしろ有害成分として除去されていた。
【0003】
【特許文献1】
特開2001−259470号公報
【特許文献2】
特開2000−140688号公報
【非特許文献1】
日本防菌防黴学会誌 第27巻第11号 713〜722頁
【非特許文献2】
食品と開発 第33巻第10号 17〜21頁
【0004】
上記特許文献1は、高圧放電によりマイナスイオンと共に発生したオゾンを触媒で分解除去する空気清浄器の例、特許文献2は、高圧放電によりマイナスイオンと共に副次的に発生したオゾンを装置内における殺菌に有効に利用した空気清浄器及び空気調和装置の例である。また上記非特許文献1及び2は、オゾンとマイナスイオンの併用により殺菌効果が向上することを論じた報告であるが、人体及び室内機器に悪影響を与えない低濃度のマイナスイオンとオゾンとを共存させることに関しては全く触れていない。
【0005】
【発明が解決しようとする課題】
この発明は、上記非特許文献1及び2の報告にヒントを得てなされたものであり、マイナスイオンにより得られるリラクゼーション作用を充分活かしながら、更にオゾンを共存させてその殺菌力により装置の滅菌作用あるいは制菌作用を高め、良好な室内環境を作り出すことを課題としてなされたものである。
【0006】
【課題を解決するための手段】
上記の課題を達成するために、この発明の空気清浄装置は、オゾン発生手段とマイナスイオン発生手段と室内空気の循環手段とを備えており、オゾン発生手段とマイナスイオン発生手段を通過した気流が循環手段によって室内に送出されるように構成された空気清浄装置において、上記オゾン発生手段が室内に放出されて拡散した状態のオゾンの室内雰囲気における濃度の平均値を0.02乃至0.05ppm に保つように調整され、あるいはそのように調整するための制御手段を備えると共に、上記マイナスイオン発生手段が、その気流吹き出し口近傍におけるマイナスイオン濃度の平均値を20万乃至100万個/ cc に保つように調整され、あるいはそのように調整するための制御手段を備えており、マイナスイオンと上記濃度のオゾンを室内雰囲気中に併存させるようにしている。またこの発明の空気清浄方法は、上記の空気清浄装置を使用し、室内空気を循環・攪拌することによりマイナスイオンと上記濃度のオゾンとを室内雰囲気中に併存させて良好な室内環境を作り出すようにしている。上記の範囲のオゾン濃度であれば、臭いが強く、室内に居る人が頭痛を起こすなどの人体に及ぼす悪影響はなく、しかも後述のようにマイナスイオンとの相乗作用によって、オゾン単独の場合よりも高い滅菌あるいは制菌の作用が発揮される。
【0007】
マイナスイオンはその発生手段の吹き出し口から遠ざかるにつれて急速に消滅してその濃度は低下するが、吹き出し口に比較的近い場所での残存量は発生手段での発生量にある程度左右される。そして、吹き出し口近傍での濃度が100万個/ccを超えると室内にある機器、特に電気回路部品や半導体等に埃が付着しやすくなって故障の原因になるなどの不都合が生ずる。また、吹き出し口近傍での濃度が20万個/ccを下回った場合には、気流がマイナスイオン発生手段を通過する時にマイナスイオンに触れる機会が低下し、オゾンとの相乗作用による滅菌あるいは制菌の作用をほとんど期待できなくなると考えられる。従って、本願発明の装置におけるマイナスイオン発生手段としては、その気流吹き出し口近傍におけるマイナスイオン濃度の平均値を20万乃至100万個/ccに保つ能力を有するものを使用することが望ましいと判断される。これにより、人体及び室内機器に悪影響を与えない低濃度でマイナスイオンとオゾンとを共存させて、所期の効果を発揮させることができるのである。
【0008】
図1及び図2は、上記の判断の裏付けを説明するためのグラフであり、オゾン濃度(横軸)と殺菌率(縦軸)の関係をマイナスイオン濃度をパラメータとして示したものである。これらのグラフは、上記非特許文献1に開示されているデータ(主として4図、5図及び6図)を基にして作成している。図1は黄色ブドウ球菌、図2は大腸菌についてのものであり、実線A、Bは通常の空気(マイナスイオン濃度は150〜200個/ccと見なされる)とマイナスイオンの濃度が300万個/ccの場合、破線はその中間の3万個/cc、20万個/cc、25万個/cc、50万個/cc及び100万個/ccの場合をそれぞれ示してある。なお、文献には実線A、B以外についてはオゾン濃度0.03ppm のデータしか開示されていないので、破線は推定線である。
【0009】
これらのグラフから判るように、特にマイナスイオンを加えない通常の空気にオゾンのみを加えた場合の実線Aに対して、積極的にマイナスイオンを加えた混合気体の場合の各破線と実線Bの殺菌率はいずれも高くなっている。すなわち、マイナスイオンとオゾンを共存させた混合気体では、従来の殺菌や除菌のみを目的としてオゾンを単独で用いた場合より低いオゾン濃度でも、数倍乃至10倍以上の殺菌効果が得られることが示されているのである。
【0010】
そこで、本願発明者は殺菌装置用としては非特許文献において対象から完全に除外されており、しかも人体に悪影響のない低濃度の領域に着目した。まずマイナスイオンについては、非特許文献のデータにおいて、0.03ppm でほぼ50%に近い殺菌率が得られている濃度、すなわち20万個/ccを下限とし、室内機器に悪影響を与えない100万個/ccを上限としてそれぞれ選定した。またオゾンについては、臭いを感じることがなく頭痛を起こす人の出ない0.05ppm を上限とし、100万個/ccのマイナスイオン濃度において30%以上の殺菌率を確保できている0.02ppm を下限としてそれぞれ選定した。
【0011】
しかし、殺菌率は細菌の種類によっても異なり、また上記非特許文献は供試菌のサンプルを狭いチャンバー内に置き、所定の濃度のマイナスイオンとオゾンの雰囲気に常時さらしながら所定の時間経過した結果の報告である。これに対して本願発明では、発生したマイナスイオンは室内雰囲気中に広がって濃度が低下するので、比較的高濃度のマイナスイオンに触れることによって滅菌あるいは制菌作用が促進されるのは、オゾンを含む気流がマイナスイオン発生手段を通過して放出されるまでの短い時間に過ぎないと考えられる。従って、雰囲気が常時所定の濃度に保たれている非特許文献とは条件が異なり、非特許文献のデータを本願発明にそのまま適用できないことはもちろんである。
【0012】
図3は吹き出し口からの距離とマイナスイオンの濃度との関係を例示したものである。実験は、床が4m×15m、天井までの高さ3mの作業所の中央に高さ85cmの木製台を設置し、その上に風量が1.4m /分のマイナスイオン発生器を置いて気流を水平に吹き出し、同じ高さに置いた測定器(アンデス電気製ICT−201A)でマイナスイオンの濃度を測定した。図に示すように、吹き出し口から10cmの位置で100万個/ccの濃度であったマイナスイオンは距離と共に急速に消滅して低下している状況が示されている。
【0013】
このように、室内雰囲気中のマイナスイオンの濃度は、吹き出し口から離れた位置では急速に低下する。しかもマイナスイオン発生手段の能力、すなわちイオンの発生量は、吹き出し口近傍での濃度だけではなく気流の風量や速度等によって変化するし、室内雰囲気中の濃度は空気清浄装置が設置される部屋の大きさなどによっても異なる。しかし、室内を一巡して空気清浄装置に戻り、マイナスイオン発生手段に吸い込まれる時の気流のマイナスイオン濃度は、吹き出し口近傍での濃度が上記のように20万乃至100万個/ccの範囲であれば、風量や部屋の大きさなどにかかわらずほぼ700個/ccであった。従って、発生手段からある程度離れた室内でのマイナスイオン濃度は、700個/cc程度で安定した状態になっているものと考えられる。この濃度は、郊外における値の約3倍、山間地における値とほぼ同等であって、リラクゼーション作用が充分に得られる値である。
【0014】
上記非特許文献1によれば、マイナスイオンとオゾンを共存させると両者が反応して第3の物質が生成され、その第3の物質が殺菌作用を発揮するものと考えられると説明されている。本願発明の装置においては、上述のようにオゾンを含む気流がマイナスイオン発生手段を通過する時に、比較的高濃度のマイナスイオンに触れることによって滅菌や制菌作用が促進されることになるが、それだけではなく、吹き出し口近傍での濃度の差異にほとんど影響されないで700個/cc程度の濃度で安定している状態の室内雰囲気中では、上記の第3の物質による滅菌あるいは制菌作用が持続されており、これらによって滅菌や制菌の作用が総合的に発揮されるものと推測される。
【0015】
このように、非特許文献のデータをそのまま適用することはできず、しかも非特許文献において対象から完全に除外された低濃度の領域、すなわち、気流吹き出し口近傍におけるマイナスイオン濃度が20万乃至100万個/cc、オゾン濃度が0.02乃至0.05ppm の領域においても、本願発明の装置と方法により室内の空気が循環して攪拌されていれば、十分な滅菌あるいは制菌の作用が得られるものと考えられるのである。
【0016】
【発明の実施の形態】
以下、この発明の実施の形態を説明する。
【0017】
図4において1は装置本体であり、マイナスイオンを発生するマイナスイオン発生器2、オゾンを発生するオゾン発生器3、ファン4、CPUを備えた制御部5、電源部(不図示)等を内蔵し、吸い込み口6と吹き出し口7を備えている。また8はリモコンであり、メインスイッチのほか、マイナスイオン発生器2、オゾン発生器3、ファン4等のオンオフを行うための操作部やタイマー設定部等を適宜備えている。また、マイナスイオンとオゾンの発生量は発生器での風量によっても変化するので、風量調整用の操作部も設けられる。なお、吸い込み口6から吹き出し口7に至る気流の通路の適所にフィルタが設けられるが、図示は省略してある。
【0018】
装置本体1の構造と形状は空調機の室内機に準じたものであり、発生したマイナスイオンとオゾンは、吸い込み口6から吸い込まれた空気と共にファン4によって吹き出し口7から室内に向けて放出される。ファン4は単なる吹き出し用ではなく空気攪拌手段も兼ねているが、イオンやオゾンを均一に分布させる能力が不足するようであれば、別に補助ファンを設けてもよい。図は天井取り付けタイプのものを例示しており、Cは天井面を示している。
【0019】
マイナスイオン発生器2とオゾン発生器3には、周知の構造のものを適宜使用することができる。なお、図4ではマイナスイオン発生器2とオゾン発生器3を分離して示してあるが、例えばコロナ放電によりマイナスイオンとオゾンを同時に発生する方式の発生器であれば、両者が一体となった構造となる。この実施の形態では、マイナスイオン発生器2として1.4m /分の風量において20万乃至100万個/ccを放出できるものを、オゾン発生器3としては20乃至30mg/hを発生できるものをそれぞれ使用しているが、部屋が大きい場合には装置本体1を複数台設置し、これらを一括して、あるいは個別に制御できるようにするなど、状況に合わせて対応すればよい。
【0020】
この装置の運転に際しては、マイナスイオンとオゾンの濃度が所望の定常値に達するまで連続運転した後、装置が設置される部屋の大きさ及びマイナスイオン発生器2とオゾン発生器3の能力やファン4による風量、イオンとオゾンの消滅割合等から必要な運転時間を算出し、そのような運転時間となるようにマイナスイオン発生器2とオゾン発生器3をそれぞれ間欠的に、あるいは必要に応じて連続的に運転するように設定するのである。この設定内容は例えば装置の設置環境に応じて予めプログラムしておけばよく、この場合は、リモコン8をこれらの事前設定を行える仕様のものとしておく。なお、前述したように特にマイナスイオンは放出後急速に消滅してほぼ一定値で安定するので、マイナスイオン発生器2は連続運転のままでも実用上は問題はないと考えられる。
【0021】
なお、マイナスイオン濃度とオゾン濃度を一定に維持する必要がある場合は、上記のような計算によらないでそれぞれの濃度を検出するセンサーを設け、その検出結果をフィードバックしてマイナスイオン発生器2、オゾン発生器3及びファン4の運転状態を制御するようにしてもよい。
【0022】
この発明の空気清浄装置は上述のような構成であり、この装置を運転することによってマイナスイオンとオゾンが室内に放出され、マイナスイオンのリラクゼーション作用が発揮されると同時に、オゾンを単独で使用する場合よりも低くて人体への影響のない低濃度でありながら、オゾンそのものによる作用に加えてマイナスイオンとオゾンの相乗作用で生成された第3の物質による滅菌作用あるいは制菌作用が発揮され、ファン4により室内空気を循環しながら攪拌することによって、良好な室内環境を作り出すことができるのである。ちなみに、非特許文献に報告されたような学術的な精密な実験はできなかったが、通常の住宅の居間に数種類の食品を置いて比較したところ、この発明の装置を稼働させた場合の方が腐敗するまでの日数が長くなり、この発明の効果を確認することができた。
【0023】
なお、リラクゼーション作用の感じ方は人によってかなりバラツキが大きい。しかもマイナスイオンは消滅しやすく、マイナスイオンやオゾンを均一に分布させることは実際には困難な場合がある。また、マイナスイオンやオゾンの濃度の測定にも測定機器や測定条件によってバラツキが生じやすいので、上述した各数値は厳密なものではなく、およその目安と考えておくことが望ましい。
【0024】
【発明の効果】
以上の説明から明らかなように、この発明の空気清浄装置は、オゾン発生手段とマイナスイオン発生手段と室内空気の循環手段とを備えており、オゾン発生手段とマイナスイオン発生手段を通過した気流が循環手段によって室内に送出されるように構成された空気清浄装置において、上記オゾン発生手段が室内に放出されて拡散した状態のオゾンの室内雰囲気における濃度の平均値を0.02乃至0.05ppm に保つように調整され、あるいはそのように調整するための制御手段を備えると共に、上記マイナスイオン発生手段が、その気流吹き出し口近傍におけるマイナスイオン濃度の平均値を20万乃至100万個/ cc に保つように調整され、あるいはそのように調整するための制御手段を備えており、マイナスイオンと上記濃度のオゾンとを室内雰囲気中に併存させるようにしたものである。またこの発明の空気清浄方法は、上記の装置を用いて室内空気を循環・攪拌することによりマイナスイオンと上記濃度のオゾンとを室内雰囲気中に併存させて良好な室内環境を作り出すようにしたものである。従って、マイナスイオンとオゾンの相乗作用によって、オゾンを単独で使用する場合より低濃度でも滅菌作用あるいは制菌作用が発揮される。しかも、マイナスイオンのリラクゼーション作用、すなわち人をさわやかな気分にすると共に、血液の浄化、精神安定、疲労回復等の作用が発揮され、良好な室内環境を作り出すことができるのである。
【0025】
また、気流吹き出し口近傍におけるマイナスイオン濃度の平均値を20万乃至100万個/ccに保つ能力を有するマイナスイオン発生手段を用いることによって、室内機器の故障の原因になるなどの悪影響がなく、しかもリラクゼーションの効果が得られて人が居る環境での使用に適した空気清浄装置を得ることが可能となる。
【図面の簡単な説明】
【図1】オゾン濃度と殺菌率及びマイナスイオン濃度の関係を示したグラフである。
【図2】同じくオゾン濃度と殺菌率及びマイナスイオン濃度の関係を示したグラフである。
【図3】吹き出し口からの距離とマイナスイオンの濃度との関係を示したグラフである。
【図4】この発明の一実施形態における装置の構成を示す図である。
【符号の説明】
1 装置本体
2 マイナスイオン発生器
3 オゾン発生器
4 ファン
5 制御部
6 吸い込み口
7 吹き出し口
8 リモコン
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air cleaning device and an air cleaning method in which negative ions and ozone coexist at a low concentration.
[0002]
[Prior art]
The air purifier maintains a good indoor environment by circulating indoor air with a blower fan while filtering, but in recent years it has the action of negative ions, that is, to make people feel refreshed. Attention has been focused on actions such as blood purification, mental stability, and fatigue recovery (hereinafter collectively referred to as relaxation actions), and the use of negative ion generating functions incorporated in air purifiers is becoming widespread. On the other hand, sterilizers and sterilizers that utilize the sterilizing effect of ozone are well known. However, the ozone concentration when used for this purpose is normally selected to be, for example, about 1% or more, and this concentration is harmful to the human body. For this reason, ozone is not actively used in air purifiers for the purpose of sterilizing indoor air by utilizing the sterilizing effect of ozone or suppressing the growth of bacteria, rather it is a harmful component Had been removed as.
[0003]
[Patent Document 1]
JP 2001-259470 A [Patent Document 2]
JP 2000-140688 A [Non-Patent Document 1]
Journal of the Japanese Society for Antimicrobial Prevention and Control Vol.27, No.11, pages 713-722 [Non-patent Document 2]
Food and Development, Vol. 33, No. 10, pp. 17-21 [0004]
The above-mentioned patent document 1 is an example of an air purifier that decomposes and removes ozone generated together with negative ions by high-pressure discharge with a catalyst, and patent document 2 sterilizes ozone generated secondary together with negative ions by high-pressure discharge in the apparatus. It is an example of an air cleaner and an air conditioner that are effectively used for the above. In addition, Non-Patent Documents 1 and 2 are reports that discuss the improvement of bactericidal effect by the combined use of ozone and negative ions, but coexistence of low-concentration negative ions and ozone that do not adversely affect the human body and indoor equipment. There is no mention of making it happen.
[0005]
[Problems to be solved by the invention]
This invention has been made with hints from the reports of Non-Patent Documents 1 and 2 described above. While fully utilizing the relaxation action obtained by negative ions, the sterilization action of the device by the coexistence of ozone and its sterilization power. Alternatively, the challenge is to improve the antibacterial action and create a good indoor environment.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the air purifying apparatus of the present invention comprises an ozone generating means, a negative ion generating means, and a room air circulating means, and an air flow passing through the ozone generating means and the negative ion generating means In an air purifier configured to be sent indoors by a circulation means, the average concentration of ozone in the indoor atmosphere when the ozone generation means is released and diffused indoors is 0.02 to 0.05 ppm. The negative ion generation means maintains the average value of the negative ion concentration in the vicinity of the air flow outlet at 200,000 to 1,000,000 / cc . Or is equipped with a control means for adjusting so that negative ions and ozone with the above concentration are contained in the chamber. We try to coexist in the inside atmosphere. In addition, the air cleaning method of the present invention uses the above-described air cleaning device to circulate and agitate indoor air so that negative ions and ozone having the above concentrations coexist in the indoor atmosphere to create a favorable indoor environment. I have to. If the ozone concentration is in the above range, the smell is strong and there is no adverse effect on the human body, such as causing headaches in the room, and moreover than the case of ozone alone due to the synergistic action with negative ions as described later. High sterilization or bactericidal action is demonstrated.
[0007]
Negative ions disappear rapidly as they move away from the outlet of the generating means, and the concentration thereof decreases. However, the remaining amount at a location relatively close to the outlet depends to some extent on the generated amount of the generating means. If the concentration in the vicinity of the outlet exceeds 1,000,000 pieces / cc, inconveniences such as dust easily adhere to indoor devices, particularly electric circuit components, semiconductors, and the like, resulting in failure. In addition, when the concentration in the vicinity of the outlet is less than 200,000 / cc, the opportunity for the air current to come in contact with negative ions when passing through the negative ion generating means is reduced, and sterilization or sterilization due to synergistic action with ozone. It is thought that almost no action can be expected. Therefore, it is judged that it is desirable to use the negative ion generating means in the apparatus of the present invention having the ability to keep the average value of the negative ion concentration in the vicinity of the air flow outlet at 200,000 to 1,000,000 / cc. The Thereby, negative ions and ozone can coexist at a low concentration that does not adversely affect the human body and indoor equipment, and the desired effect can be exhibited.
[0008]
FIG. 1 and FIG. 2 are graphs for explaining the support of the above-described judgment, and show the relationship between the ozone concentration (horizontal axis) and the sterilization rate (vertical axis) using the negative ion concentration as a parameter. These graphs are created based on the data disclosed in Non-Patent Literature 1 (mainly FIGS. 4, 5, and 6). FIG. 1 is for S. aureus, FIG. 2 is for E. coli, and solid lines A and B are for normal air (considering negative ion concentration of 150-200 / cc) and negative ion concentration of 3 million / In the case of cc, the broken lines indicate the intermediate cases of 30,000 / cc, 200,000 / cc, 250,000 / cc, 500,000 / cc and 1 million / cc, respectively. Since the literature only discloses data with an ozone concentration of 0.03 ppm except for the solid lines A and B, the broken line is an estimated line.
[0009]
As can be seen from these graphs, the broken line and the solid line B in the case of a mixed gas in which negative ions are positively added to the solid line A when only ozone is added to normal air to which negative ions are not added. The sterilization rate is high. That is, a mixed gas in which negative ions and ozone coexist can provide a sterilizing effect several times to 10 times or more even at a lower ozone concentration than when ozone is used alone for the purpose of conventional sterilization or sterilization only. Is shown.
[0010]
Therefore, the inventor of the present application paid attention to a low-concentration region that is completely excluded from the subject in non-patent literature for sterilization devices and that does not adversely affect the human body. First, with regard to negative ions, in the data of non-patent literature, the concentration at which a sterilization rate close to 50% is obtained at 0.03 ppm, that is, 200,000 / cc is the lower limit, and 1 million that does not adversely affect indoor equipment. Individual / cc was selected as the upper limit. For ozone, the upper limit is 0.05 ppm, at which no one smells and no headache occurs, and 0.02 ppm, which can ensure a sterilization rate of 30% or higher at a negative ion concentration of 1 million cells / cc. Each was selected as the lower limit.
[0011]
However, the sterilization rate varies depending on the type of bacteria, and the above non-patent document shows the result of placing a sample of the test bacteria in a narrow chamber and elapses of a predetermined time while constantly exposing to a negative ion and ozone atmosphere of a predetermined concentration. This is a report. On the other hand, in the present invention, the generated negative ions spread in the indoor atmosphere and the concentration decreases, so that sterilization or bactericidal action is promoted by touching a relatively high concentration of negative ions. It is considered that this is only a short time until the airflow including the airflow is discharged through the negative ion generating means. Therefore, the conditions are different from those of non-patent documents in which the atmosphere is always maintained at a predetermined concentration, and it is a matter of course that the data of the non-patent documents cannot be directly applied to the present invention.
[0012]
FIG. 3 illustrates the relationship between the distance from the outlet and the concentration of negative ions. In the experiment, a wooden stand with a height of 85 cm was installed in the center of a work site with a floor of 4 m x 15 m and a height of 3 m to the ceiling, and a negative ion generator with an air volume of 1.4 m 3 / min was placed on it. The air current was blown out horizontally, and the concentration of negative ions was measured with a measuring instrument (Andes Electric ICT-201A) placed at the same height. As shown in the figure, it is shown that the negative ions having a concentration of 1 million ions / cc at a position 10 cm from the outlet rapidly disappear and decrease with distance.
[0013]
As described above, the concentration of negative ions in the indoor atmosphere rapidly decreases at a position away from the outlet. Moreover, the capacity of the negative ion generating means, that is, the amount of ions generated varies not only with the concentration in the vicinity of the outlet, but also with the air flow rate and speed, etc., and the concentration in the indoor atmosphere depends on the room where the air purifier is installed. It depends on the size. However, the negative ion concentration of the airflow when returning to the air cleaning device after taking a round of the room and being sucked into the negative ion generating means is in the range of 200,000 to 1,000,000 / cc as described above. Then, it was almost 700 / cc regardless of the air volume and the size of the room. Therefore, the negative ion concentration in the room some distance away from the generating means is considered to be stable at about 700 ions / cc. This concentration is about three times the value in the suburbs and almost the same as the value in mountainous areas, and is a value that can sufficiently achieve a relaxation action.
[0014]
According to the said nonpatent literature 1, when a negative ion and ozone are made to coexist, both will react and a 3rd substance will be produced | generated, and it is thought that the 3rd substance is considered to exhibit a bactericidal action. . In the apparatus of the present invention, as described above, when the air stream containing ozone passes through the negative ion generating means, sterilization and bactericidal action are promoted by touching a relatively high concentration of negative ions, In addition, the sterilization or bactericidal action of the third substance is sustained in an indoor atmosphere that is hardly affected by the difference in concentration near the outlet and is stable at a concentration of about 700 cells / cc. Therefore, it is presumed that the effects of sterilization and antibacterial are exhibited comprehensively.
[0015]
As described above, the data of the non-patent document cannot be applied as it is, and the negative ion concentration in the low concentration region completely excluded from the target in the non-patent document, that is, in the vicinity of the air flow outlet is 200,000 to 100 Even in the region of 10,000 / cc and ozone concentration of 0.02 to 0.05 ppm, sufficient sterilization or bactericidal action can be obtained if room air is circulated and stirred by the apparatus and method of the present invention. It is thought that it is possible.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0017]
In FIG. 4, reference numeral 1 denotes an apparatus main body, which includes a negative ion generator 2 that generates negative ions, an ozone generator 3 that generates ozone, a fan 4, a control unit 5 having a CPU, a power supply unit (not shown), and the like. In addition, a suction port 6 and a blowout port 7 are provided. Reference numeral 8 denotes a remote controller, which is appropriately provided with an operation unit for turning on / off the negative ion generator 2, the ozone generator 3, the fan 4 and the like in addition to the main switch. In addition, since the amount of negative ions and ozone generated varies depending on the air flow at the generator, an operation unit for adjusting the air flow is also provided. Although a filter is provided at an appropriate position in the airflow path from the suction port 6 to the blowout port 7, the illustration is omitted.
[0018]
The structure and shape of the apparatus main body 1 conforms to the indoor unit of the air conditioner, and the generated negative ions and ozone are discharged from the blowout port 7 toward the room by the fan 4 together with the air sucked from the suction port 6. The Although the fan 4 serves not only as a blowout but also as an air stirring means, an auxiliary fan may be provided separately if the ability to uniformly distribute ions and ozone is insufficient. The figure illustrates a ceiling-mounted type, and C indicates a ceiling surface.
[0019]
As the negative ion generator 2 and the ozone generator 3, those having a known structure can be used as appropriate. In FIG. 4, the negative ion generator 2 and the ozone generator 3 are shown separately. However, for example, in the case of a generator that generates negative ions and ozone simultaneously by corona discharge, both are integrated. It becomes a structure. In this embodiment, the negative ion generator 2 can emit 200,000 to 1,000,000 pieces / cc at an air flow of 1.4 m 3 / min, and the ozone generator 3 can generate 20 to 30 mg / h. However, if the room is large, a plurality of apparatus main bodies 1 may be installed so that they can be controlled collectively or individually.
[0020]
In the operation of this apparatus, after the continuous operation until the negative ion and ozone concentrations reach desired steady values, the size of the room in which the apparatus is installed, the capacity of the negative ion generator 2 and the ozone generator 3 and the fan. The required operating time is calculated from the air volume by 4 and the extinction ratio of ions and ozone, etc., and the negative ion generator 2 and the ozone generator 3 are respectively intermittently or as necessary so that the operating time is reached. It is set to operate continuously. This setting content may be programmed in advance according to the installation environment of the apparatus, for example, and in this case, the remote controller 8 is set to a specification that allows these advance settings. In addition, as described above, since the negative ions disappear rapidly after discharge and stabilize at a substantially constant value, it is considered that there is no practical problem even if the negative ion generator 2 is continuously operated.
[0021]
When it is necessary to maintain the negative ion concentration and the ozone concentration constant, a sensor for detecting each concentration is provided without using the above calculation, and the detection result is fed back to the negative ion generator 2. The operation state of the ozone generator 3 and the fan 4 may be controlled.
[0022]
The air purifying apparatus of the present invention is configured as described above. By operating this apparatus, negative ions and ozone are released into the room, and the relaxation action of negative ions is exhibited, and at the same time, ozone is used alone. The sterilization or bactericidal action of the third substance generated by the synergistic action of negative ions and ozone in addition to the action of ozone itself, while being a low concentration that is lower than the case and has no effect on the human body, A good indoor environment can be created by stirring the indoor air while circulating it with the fan 4. By the way, we couldn't carry out scientific precision experiments as reported in non-patent literature, but we compared several kinds of food in a normal living room. The number of days until rot became longer, and the effect of the present invention could be confirmed.
[0023]
In addition, how to feel the relaxation action varies considerably from person to person. In addition, negative ions are easy to disappear, and it is actually difficult to uniformly distribute negative ions and ozone. In addition, since the measurement of the negative ion and ozone concentrations is likely to vary depending on the measurement equipment and measurement conditions, it is desirable that the above-mentioned numerical values are not strict but approximate.
[0024]
【The invention's effect】
As is apparent from the above description, the air purifier of the present invention comprises ozone generating means, negative ion generating means, and indoor air circulating means, and the airflow that has passed through the ozone generating means and negative ion generating means In an air purifier configured to be sent indoors by a circulation means, the average concentration of ozone in the indoor atmosphere when the ozone generation means is released and diffused indoors is 0.02 to 0.05 ppm. The negative ion generation means maintains the average value of the negative ion concentration in the vicinity of the air flow outlet at 200,000 to 1,000,000 / cc . Or is equipped with a control means for such adjustment , and negative ions and ozone with the above concentration Are made to coexist in the indoor atmosphere. Also, the air cleaning method of the present invention is to create a good indoor environment by coexisting negative ions and ozone with the above concentration in the indoor atmosphere by circulating and stirring indoor air using the above-mentioned apparatus. It is. Therefore, due to the synergistic action of negative ions and ozone, sterilization or bactericidal action is exhibited even at a lower concentration than when ozone is used alone. In addition, the relaxation action of negative ions, that is, the person feels refreshed, and the actions of blood purification, mental stability, recovery from fatigue, etc. are exhibited, and a favorable indoor environment can be created.
[0025]
In addition, by using negative ion generation means having the ability to maintain the average value of negative ion concentration in the vicinity of the airflow outlet at 200,000 to 1,000,000 / cc, there is no adverse effect such as causing failure of indoor equipment, In addition, an effect of relaxation can be obtained, and an air purifier suitable for use in an environment where there is a person can be obtained.
[Brief description of the drawings]
FIG. 1 is a graph showing the relationship between ozone concentration, sterilization rate, and negative ion concentration.
FIG. 2 is a graph showing the relationship between ozone concentration, sterilization rate, and negative ion concentration.
FIG. 3 is a graph showing the relationship between the distance from the outlet and the concentration of negative ions.
FIG. 4 is a diagram showing a configuration of an apparatus according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Apparatus body 2 Negative ion generator 3 Ozone generator 4 Fan 5 Control part 6 Suction port 7 Outlet 8 Remote control

Claims (2)

オゾン発生手段とマイナスイオン発生手段と室内空気の循環手段とを備えており、オゾン発生手段とマイナスイオン発生手段を通過した気流が循環手段によって室内に送出されるように構成された空気清浄装置において、上記オゾン発生手段が室内に放出されて拡散した状態のオゾンの室内雰囲気における濃度の平均値を0.02乃至0.05ppm に保つように調整され、あるいはそのように調整するための制御手段を備えると共に、上記マイナスイオン発生手段が、その気流吹き出し口近傍におけるマイナスイオン濃度の平均値を20万乃至100万個/ cc に保つように調整され、あるいはそのように調整するための制御手段を備えており、マイナスイオンと上記濃度のオゾンを室内雰囲気中に併存させることを特徴とする空気清浄装置。 In an air purifier comprising an ozone generating means, a negative ion generating means, and a room air circulating means, and an air flow passing through the ozone generating means and the negative ion generating means is sent out indoors by the circulating means . The ozone generating means is adjusted so as to keep the average value of the concentration of ozone in the indoor atmosphere in a state of being released and diffused indoors at 0.02 to 0.05 ppm , or a control means for adjusting so And the negative ion generating means is adjusted to maintain an average value of negative ion concentration in the vicinity of the air flow outlet at 200,000 to 1,000,000 / cc , or a control means for adjusting the negative ion concentration. and it has an air cleaning apparatus, characterized in that coexist ozone negative ions and the concentration in the room atmosphere. 請求項1記載の空気清浄装置を使用し、室内空気を循環・攪拌することによりマイナスイオンと上記濃度のオゾンとを室内雰囲気中に併存させて良好な室内環境を作り出すことを特徴とする空気清浄方法。 An air purifier that uses the air purifier according to claim 1 to circulate and agitate indoor air so that negative ions and ozone having the above concentration coexist in the indoor atmosphere to create a favorable indoor environment. Method.
JP2003208146A 2003-08-21 2003-08-21 Air cleaning apparatus and air cleaning method Expired - Fee Related JP3979652B2 (en)

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CNB2004800275456A CN100393362C (en) 2003-08-21 2004-08-17 Apparatus and method for clarifying air
AU2004266523A AU2004266523B2 (en) 2003-08-21 2004-08-17 Air purification apparatus and method
PCT/JP2004/012047 WO2005018689A1 (en) 2003-08-21 2004-08-17 Apparatus and method for clarifying air
AT04772008T ATE530200T1 (en) 2003-08-21 2004-08-17 DEVICE AND METHOD FOR CLEARING AIR
EP04772008A EP1671657B1 (en) 2003-08-21 2004-08-17 Apparatus and method for clarifying air
US10/568,843 US7540900B2 (en) 2003-08-21 2004-08-17 Air clarifying apparatus and air clarifying method
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HK1097201A1 (en) 2007-06-22
KR20060060028A (en) 2006-06-02
WO2005018689A1 (en) 2005-03-03
US20070022879A1 (en) 2007-02-01
ATE530200T1 (en) 2011-11-15
EP1671657B1 (en) 2011-10-26
CN100393362C (en) 2008-06-11
CN1856330A (en) 2006-11-01
JP2005065709A (en) 2005-03-17
EP1671657A1 (en) 2006-06-21
KR101189527B1 (en) 2012-10-11
AU2004266523A1 (en) 2005-03-03
EP1671657A4 (en) 2008-05-07
US7540900B2 (en) 2009-06-02
AU2004266523B2 (en) 2010-07-01

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